Emulator

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Game Name?
Gamecube BIOS (USA)

Game ID?
Gamecube BIOS (USA)

What's the problem? Describe what went wrong in few words.
If using Direct3D with EFB (External Frame Buffer) set to "Virtual" and also using fullscreen (no bordered window, completely fullscreen) at the same time, half of the screen will be cut off from the top, switching to "Real" fixes the problem but degrades texture quality by an extreme amount

What did you expect to happen instead?
The gamecube bios to work fine, and not have half the screen cut off

What steps will reproduce the problem?
[Don't assume we have ever played the game and know any level names. Be as
specific as possible.]

1. Select Direct3D
2. Hacks > Uncheck "Disable" under External Frame Buffer and then click "Virtual" (unless already selected)
3. Start a copy of the Gamecube bios (USA)
4. Notice how half of the screen has been cut off

Dolphin 3.5 and 3.5-367 are old versions of Dolphin that have
known issues and bugs, so don't report issues about them and test the
latest Dolphin version first.
Which versions of Dolphin did you test on?

Dolphin 4.0-2795

Does using an older version of Dolphin solve your issue? If yes, which
versions of Dolphin used to work?
Not to the best of my knowledge. 4.0.2 does the same thing.

What are your PC specifications? (including, but not limited to: Operating
System, CPU and GPU)

Summary
Operating System
Windows 8.1 Pro 64-bit
CPU
Intel Core i7 2630QM @ 2.00GHz 164 °F
Sandy Bridge 32nm Technology
RAM
8.00GB Dual-Channel DDR3 @ 656MHz (9-9-9-24)
Motherboard
Dell Inc. 0NJT03 (CPU) 168 °F
Graphics
Generic PnP Monitor (1920x1080@60Hz)
Intel (Dell)
2047MB NVIDIA GeForce GT 540M (Dell) 135 °F
Storage
596GB TOSHIBA MK6461GSYN (SATA) 123 °F
Optical Drives
HL-DT-ST DVDRWBD CT30N
ELBY CLONEDRIVE SCSI CdRom Device
Audio
Realtek High Definition Audio
Operating System
Windows 8.1 Pro 64-bit
Computer type: Virtual
Installation Date: 8/31/2013 12:35:02 AM

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)
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Screenshot of Problem: http://i.imgur.com/Ai3j1q4.png

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link here. Use imgur.com for images and pastie.org for logs.]